Abstract

Traffic congestion has increased rapidly in the past decades mainly due to a sharp increase in vehicles using the road networks. Recently, and to deal with motorway congestion, traffic signal devices (ramp metering) installed on motorway entrances were increasingly being applied on a part-time basis to regulate the entering traffic aiming at reducing congestion. However, there are still some questions which this research project is trying to address for justifying the use of ramp metering systems.